Objects, methods, and classes
Identify the (a) class, (b) object, and (c) type of parameters passed to the constructor: "BankAccount account39 = new BankAccount(500.43);"
(a) BankAccount (b) account39 (c) double
Identify the (a) class, (b) object, and (c) type of parameter(s) passed to the constructor: " double length = 44.0; int width = 13; Rectangle myRect = new Rectangle(length,width); "
(a) Rectangle (b) myRect (c) double and int
System.out.println(rand.nextInt(50)+1);
1...50
System.out.println(rand.nextInt(90)+10);
10...99
System.out.println(rand.nextInt(120)+60);
60...179
Print two lines of Java code that will create a Bank object for yourself and initialize both your checking and your savings account to $1 million.
Bank myAccount; myAccount = new Bank(10000000,1000000);
abs, sqrt, pow, round, floor, ceil, min, max
Math class methods
_____ _______ is when a method can have the same name but different parameters.
Method overloading
In a Computer Graphics Coordinate system X-values increase moving _____ and Y-values increase moving _____.
X-values increase moving right; Y-values increase moving down
In a Cartesian Coordinate system X-values increase moving _____ and Y-values increase moving ______.
X-values increase moving right; Y-values increase moving up
A collection of some category
a class
To call a(n) _____ method one uses the class identifier, followed by a period and the method identifier.
class
In the statement "import java.util.Random;" what is the class and what is the package?
class - Random; package - util
Math methods are _____ methods.
class methods
One ____, many ______.
class; objects
Data and methods are contained in what?
classes
What are the 4 stages of program design?
cryptic programming stage, spaghetti programming stage, structured programming, object-oriented programming
The state of attributes and methods being packaged in the same container, same object, or same capsule is called what?
encapsulation
Object-oriented programming incorporates what three features?
encapsulation, polymorphism, and inheritance
What are two types of class interaction?
inheritance and composition
All package identifiers start with a(n) _____ letter and a class identifier starts with a(n) _____ letter.
lower-case; upper-case
Print one line of Java code that will make a $250,000 deposit in your checking account.
myAccount.checkingDeposit(250,000);
Print one line of Java code that will make a $500,000 withdrawal from your savings account.
myAccount.savingsWithdrawal(-500,000);
A single instance of a given data structure template is a(n) ________.
object
Bank, Random, and DecimalFormat methods are ______ methods.
object
Too call a(n) ______ method one uses the object identifier, followed by a period and the method identifier.
object
Methods and data are contained in what?
objects
Methods with multiple capabilities are called ______.
overloaded methods
In OOP, what are methods used for?
performs actions on the information
many forms
polymorphism
Write out the signature for the constructor of Rectangle class: " double length = 44.0; int width = 13; Rectangle myRect = new Rectangle(length,width); "
public Rectangle(double x, int y);
In OOP, what are attributes used for?
stores programming information
Which must exist first: the class or the object?
the class
Instantiate a "tom" object of the "Bank" class.
tom = new Bank();
